WO2022074765A1 - Multiplex transmission system and resource control method for multiplex transmission system - Google Patents

Multiplex transmission system and resource control method for multiplex transmission system Download PDF

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Publication number
WO2022074765A1
WO2022074765A1 PCT/JP2020/038017 JP2020038017W WO2022074765A1 WO 2022074765 A1 WO2022074765 A1 WO 2022074765A1 JP 2020038017 W JP2020038017 W JP 2020038017W WO 2022074765 A1 WO2022074765 A1 WO 2022074765A1
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Prior art keywords
multiplex transmission
unit
transmission device
resource pool
failure
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PCT/JP2020/038017
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French (fr)
Japanese (ja)
Inventor
紘子 野村
慶太 高橋
智也 秦野
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日本電信電話株式会社
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Priority to PCT/JP2020/038017 priority Critical patent/WO2022074765A1/en
Priority to US18/028,744 priority patent/US20230336244A1/en
Priority to JP2022555030A priority patent/JPWO2022074765A1/ja
Publication of WO2022074765A1 publication Critical patent/WO2022074765A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/03—Arrangements for fault recovery
    • H04B10/038—Arrangements for fault recovery using bypasses
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received

Definitions

  • the present disclosure relates to a multiplex transmission system and a resource control method for the multiplex transmission system.
  • Non-Patent Document 1 discloses a multiplex transmission system in which a plurality of signals are multiplexed and transmitted between two points.
  • Non-Patent Document 1 specifically discloses one that multiplexes a plurality of signals by using wavelength division multiplexing (WDM: Wavelength Division Multiplex).
  • WDM Wavelength Division Multiplex
  • a multiplex transmission device that performs multiplex separation of wavelengths is installed at each of the two transmission points.
  • Non-Patent Document 2 describes a redundant technique for an access network.
  • a redundant technique as described in Non-Patent Document 2 is required. Become.
  • An object of the present disclosure is to provide a multiplex transmission system and a multiplex transmission system resource control method capable of realizing a redundant configuration for troubleshooting while reducing unnecessary resources.
  • the multiplex transmission system is provided in the first multiplex transmission device in a multiplex transmission system in which a plurality of signals are multiplexed and transmitted between the first multiplex transmission device and the second multiplex transmission device, and has a plurality of functions. It is provided with a resource pool having resources capable of selectively constructing one or more of the functions, a monitor unit for monitoring information on the failure when a failure occurs, and a control unit for controlling the resource pool. It is a thing. When a failure occurs, the control unit causes the resource pool to build functions necessary for building a redundant configuration according to the content of the failure based on the monitoring result of the monitor unit.
  • the resource control method of the multiplex transmission system is provided in the first multiplex transmission device in the multiplex transmission system in which a plurality of signals are multiplexed and transmitted between the first multiplex transmission device and the second multiplex transmission device.
  • This resource control method is a resource to build a monitoring step that monitors the information of the failure when a failure occurs and a function to build a redundant configuration according to the content of the failure based on the result of the monitoring step. It has a function building step to control the pool.
  • the multiplex transmission system and the resource control method of the multiplex transmission system according to the present disclosure it is possible to realize a redundant configuration for troubleshooting while reducing unnecessary resources.
  • FIG. 1 shows typically an example of the whole structure of the multiplex transmission system which concerns on Embodiment 1.
  • FIG. 2 is a block diagram which shows the structure of the multiplex transmission apparatus provided in the multiplex transmission system which concerns on Embodiment 1.
  • FIG. It is a flow diagram which shows the flow of the resource control method of the multiplex transmission system which concerns on Embodiment 1.
  • FIG. It is a block diagram explaining the 1st operation example of the multiplex transmission system which concerns on Embodiment 1.
  • FIG. It is a block diagram explaining the 2nd operation example of the multiplex transmission system which concerns on Embodiment 1.
  • FIG. 1 is a diagram schematically showing an example of the overall configuration of the multiplex transmission system according to the first embodiment.
  • the multiplex transmission system according to the present embodiment includes a first multiplex transmission device 100 and a second multiplex transmission device 200.
  • the multiplex transmission system of the present embodiment is a system in which a plurality of signals are multiplexed and transmitted between the first multiplex transmission device 100 and the second multiplex transmission device 200.
  • the multiplex transmission system according to this disclosure can be applied to a system using various well-known signal multiplexing methods.
  • Specific signal multiplexing methods include frequency division multiplexing (WDM: Waveringth Division Multiplex), frequency division multiplexing (FDM: Frequency Division Multiplex), time division multiplexing (TDM: Time Division Multiplex), and code division multiplexing (TDM).
  • WDM Waveringth Division Multiplex
  • FDM Frequency Division Multiplex
  • TDM Time Division Multiplex
  • TDM Time Division Multiplex
  • CDM Code Division Multiplex
  • the first multiplex transmission device 100 and the second multiplex transmission device 200 are communicably connected by an optical fiber cable.
  • the multiplex transmission system by multiplexing a plurality of signals transmitted between two points, it is possible to reduce the number of optical fiber cables required for transmitting the plurality of signals between the two points.
  • the first multiplex transmission device 100 and the second multiplex transmission device 200 can be communicably connected by a single optical fiber cable.
  • One or more slave stations are connected to one of the first multiplex transmission device 100 and the second multiplex transmission device 200 so as to be able to communicate with each other.
  • One or more master stations are connected to the other of the first multiplex transmission device 100 and the second multiplex transmission device 200 so as to be able to communicate with each other.
  • the first slave station 11 and the second slave station 12 are connected to the first multiplex transmission device 100
  • the first master station 21 and the second master station 22 are connected to the second multiplex transmission device 200. There is.
  • the multiplex transmission system is applied to the mobile front hall.
  • the first master station 21 and the second master station 22 correspond to the CU (Central Unit) and / or the DU (Distributed Unit) of the base station.
  • the first slave station 11 and the second slave station 12 correspond to RU (Radio Unit).
  • the first slave station 11 and the first master station 21 are base stations of the first mobile carrier.
  • the second slave station 12 and the second master station 22 are base stations of the second mobile carrier.
  • the first mobile carrier and the second mobile carrier are different mobile carriers (mobile communication carriers).
  • An antenna is connected to each slave station. Each antenna outputs radio waves to individual areas to form a reception area.
  • Each master station may be formed as an individual device for each mobile carrier, or may be formed as an integrated device.
  • each slave station may be formed as an individual device for each mobile carrier, or may be formed as an integrated device.
  • FIG. 2 is a block diagram showing a configuration of a multiplex transmission device included in the multiplex transmission system according to the first embodiment.
  • the master station and the slave station connected to the first multiplex transmission device 100 and the second multiplex transmission device 200 are collectively referred to as a client device here.
  • Each of the first multiplex transmission device 100 and the second multiplex transmission device 200 is provided with a plurality of client ports to which a client device can be connected.
  • each of the first multiplex transmission device 100 and the second multiplex transmission device 200 is provided with two client ports.
  • the two client ports provided in the first multiplex transmission device 100 are referred to as a first client port and a second client port.
  • the two client ports provided in the second multiplex transmission device 200 are referred to as a third client port and a fourth client port.
  • “first” is indicated by “# 1”
  • “second” is indicated by “# 2”
  • "third” is indicated by “# 3”
  • "fourth” is indicated by "#”. 4 ”.
  • the first client port of the first multiplex transmission device 100 is provided with an O / E unit 121 on the first client side and an E / O unit 122 on the first client side.
  • the second client port of the first multiplex transmission device 100 is provided with a second client-side O / E unit 123 and a second client-side E / O unit 124.
  • the first multiplex transmission device 100 includes a first line side E / O unit 111, a first line side O / E unit 112, a second line side E / O unit 113, a second line side O / E unit 114, and A first wave section 101 is further provided.
  • the optical signal input to the first client port of the first multiplex transmission device 100 is converted into an electric signal in the first client side O / E unit 121 and output to the first line side E / O unit 111.
  • the first line side E / O unit 111 converts the input electric signal into an optical signal and outputs it to the first combine unit 101.
  • the optical signal input to the second client port of the first multiplex transmission device 100 is converted into an electric signal in the second client side O / E unit 123 and output to the second line side E / O unit 113. ..
  • the second line side E / O unit 113 converts the input electric signal into an optical signal and outputs it to the first combine unit 101.
  • the first wave section 101 multiplexes the optical signals input from the first line side E / O section 111 and the second line side E / O section 113.
  • the optical signal multiplexed in the first combiner section 101 is transmitted from the first multiplex transmission device 100 to the second multiplex transmission device 200.
  • the multiplexed optical signal transmitted from the second multiplex transmission device 200 to the first multiplex transmission device 100 is input to the first combine unit 101.
  • the first combiner section 101 separates the multiplexed signal input from the second multiplex transmission device 200 and outputs it to each of the first line side O / E section 112 and the second line side O / E section 114. do.
  • the first line side O / E unit 112 converts the optical signal input from the first combine unit 101 into an electric signal and outputs it to the first client side E / O unit 122.
  • the first client-side E / O unit 122 converts the input electric signal into an optical signal and outputs it to the first client port of the first multiplex transmission device 100.
  • the second line side O / E unit 114 converts the optical signal input from the first combine unit 101 into an electric signal and outputs it to the second client side E / O unit 124.
  • the second client-side E / O unit 124 converts the input electric signal into an optical signal and outputs it to the second client port of the first multiplex transmission device 100.
  • the first line side E / O unit 111, the first line side O / E unit 112, the first client side O / E unit 121, and the first client side E / O unit 122 are the first multiplex transmission device. It corresponds to 100 first client ports.
  • the second line side E / O unit 113, the second line side O / E unit 114, the second client side O / E unit 123, and the second client side E / O unit 124 are the first multiplex transmission device 100. It corresponds to the second client port.
  • the second multiplex transmission device 200 is configured in the same manner as the first multiplex transmission device 100.
  • the internal configuration of the second multiplex transmission device 200 is not shown.
  • the second multiplex transmission device 200 is provided with a third client port and a fourth client port.
  • the second multiplex transmission device 200 includes a client-side O / E unit and an E / O unit corresponding to each client port.
  • the second multiplex transmission device 200 includes an O / E unit and an E / O unit on the line side corresponding to each client port.
  • the second multiplex transmission device 200 includes a second combiner that functions in the same manner as the first combiner 101.
  • the line-side O / E section and E / O section of each multiplex transmission device are composed of an optical module that emits light at a fixed wavelength.
  • the line-side O / E section and E / O section included in the first multiplex transmission device 100 have the same wavelength as the line-side O / E section and E / O section of the second multiplex transmission device 200. Communication can only be performed with an optical module that emits light.
  • each slave station and the first multiplex transmission device 100 may be connected via a coupler (not shown) in order to construct a redundant configuration of a transmission line.
  • each master station and the second multiplex transmission device 200 may be connected via a coupler for constructing a redundant configuration of a transmission line.
  • a switch capable of switching the transmission line provided inside each multiplex transmission device may be used to construct a redundant configuration of the transmission line between the base station and each multiplex transmission device.
  • the first multiplex transmission device 100 includes a first line switching unit 102 in order to construct a redundant configuration of transmission lines between the multiplex transmission devices.
  • the second multiplex transmission device 200 includes a second line switching unit that functions in the same manner as the first line switching unit 102.
  • the line switching unit is for constructing a redundant configuration of transmission lines between multiplex transmission devices.
  • the line switching portions are connected by a plurality of paths (optical fiber cables). In the illustrated configuration example, the line switching portions are connected by two paths.
  • a signal from the combine section is input to the line switching section.
  • the line switching unit selects an arbitrary route from a plurality of routes connecting the line switching units, and outputs a signal from the combine unit to the selected line.
  • the line switching unit may be provided outside the multiplex transmission device.
  • the first multiplex transmission device 100 and the second multiplex transmission device 200 are connected by a plurality of switchable transmission paths.
  • the first multiplex transmission device 100 includes a resource pool 130.
  • the resource pool 130 has resources capable of selectively constructing one or more functions among a plurality of functions.
  • the resource pool 130 is composed of, for example, a rewritable FPGA.
  • Various electrical functions can be flexibly added to and removed from the resource pool 130.
  • the resource pool 130 partially or completely rewrites as necessary to build the necessary functions.
  • the resource pool 130 constructs a function for realizing a redundant configuration for dealing with a failure when a failure occurs.
  • a redundant configuration is constructed using the resource pool 130. This makes it possible to utilize resources more effectively than in the past. According to the present disclosure, it is possible to realize a redundant configuration for troubleshooting while reducing unnecessary resources.
  • the resource pool 130 may also be provided in the second multiplex transmission device 200.
  • the resource pool 130 may be provided in at least one of the first multiplex transmission device 100 and the second multiplex transmission device 200.
  • the functional units that can be constructed in the resources of the resource pool 130 are, for example, the SW unit 131, the error correction processing unit 132, the modulation unit 133, the filter unit 134, and the like.
  • the SW unit 131 has a switching function.
  • the SW unit 131 constructs a redundant path, for example, when a failure occurs in each O / E unit, each E / O unit, or other transmission / reception unit in the first multiplex transmission device 100.
  • the error correction processing unit 132 has a function of correcting the bit error rate due to signal deterioration occurring in the transmission line.
  • the error correction processing unit 132 detects and corrects an error on the receiving side based on the error correction code added to the data on the transmitting side.
  • the error correction code for example, an arbitrary code such as a Reed-Solomon code or an LDPC code is paid out.
  • the error correction processing unit 132 is constructed in the resource of the resource pool 130, for example, when the switching destination route becomes a long distance in the event of a line failure.
  • the modulation unit 133 has a function of multiplying the signal from the client port.
  • the modulation unit 133 generates, for example, a PAM4 signal.
  • the bit rate can be increased while maintaining the baud rate.
  • the modulation unit 133 for example, the cost of the O / E unit and the E / O unit can be reduced.
  • the filter unit 134 is for reducing the transmission speed, and has a function of filtering and discarding a part of the main signal.
  • the multiplex transmission system includes a management control unit 140.
  • the management control unit 140 includes, for example, a resource pool side monitor unit 141, a line side monitor unit 142, and a resource calculation unit 143.
  • the management control unit 140 is provided outside the first multiplex transmission device 100 in the illustrated configuration example, at least a part of the functions of the management control unit 140 is provided in the first multiplex transmission device 100. May be good. Further, at least a part of the functions of the management control unit 140 may be provided in the second multiplex transmission device 200.
  • the resource pool side monitor unit 141 monitors the current state of the resource pool 130.
  • the monitoring information by the resource pool side monitoring unit 141 is sent to the resource calculation unit 143.
  • the line side monitor unit 142 monitors the states of the first line side E / O unit 111, the first line side O / E unit 112, the second line side E / O unit 113, and the second line side O / E unit 114. do.
  • the monitoring information by the line side monitor unit 142 is sent to the resource calculation unit 143.
  • the line The side monitor unit 142 notifies the resource calculation unit 143 of the failure.
  • the resource calculation unit 143 performs a calculation process for constructing each functional unit in the resource in the resource pool 130.
  • the resource calculation unit 143 performs calculation processing based on the monitoring information sent from the resource pool side monitor unit 141 and the line side monitor unit 142. Then, the resource calculation unit 143 issues an instruction to the resource pool 130 to construct a necessary functional unit based on the calculation processing result.
  • the management control unit 140 may be configured by a computer equipped with a processor and a memory as hardware.
  • the processor is also referred to as a CPU (Central Processing Unit), a central processing unit, a processing unit, an arithmetic unit, a microprocessor, a microcomputer, or a DSP.
  • Examples of the memory include non-volatile or volatile semiconductor memories such as RAM, ROM, flash memory, EPROM and EEPROM, or magnetic disks, flexible disks, optical disks, compact disks, mini disks and DVDs.
  • the program as software is stored in the memory of the management control unit 140.
  • the management control unit 140 executes preset processing by executing a program stored in the memory by the processor, and realizes each function as a result of the cooperation between the hardware and the software.
  • the line-side monitor unit 142 in the present embodiment functions as a monitor unit for monitoring information on the failure when a failure occurs.
  • the resource calculation unit 143 in the present embodiment serves as a control unit for causing the resource pool 130 to construct the functions necessary for constructing the redundant configuration according to the content of the failure based on the monitoring result by the monitor unit. Function.
  • FIG. 3 is a flow chart showing the flow of the resource control method of the multiplex transmission system according to the first embodiment.
  • FIG. 3 illustrates the operation when a failure occurs.
  • step S11 information on the failure is monitored.
  • the process of step S11 is also referred to as a monitoring step in the present disclosure.
  • step S12 based on the result of the monitoring step, the resource pool is made to construct a function for constructing a redundant configuration according to the content of the failure.
  • the process of step S12 will also be referred to as a function construction step.
  • the monitoring step and the function building step are carried out by the management control unit 140 and the resource pool 130.
  • the resource control method as shown in FIG. 3 and the multiplex transmission system configured to be able to execute the resource control method, it is possible to deal with various failures while reducing wasteful resources.
  • the line side monitor unit 142 notifies the resource calculation unit 143 of the information of the failure.
  • the resource calculation unit 143 installs a function for constructing a new transmission path avoiding the transmission path including the failure location in the resource pool 130. To execute.
  • FIG. 4 is a block diagram illustrating a first operation example of the multiplex transmission system according to the first embodiment.
  • FIG. 4 shows an operation example when the second line side E / O unit 113 or the second line side O / E unit 114 fails. If the second line side E / O unit 113 or the second line side O / E unit 114 fails, the signal transmission of the second slave station 12 cannot be performed. In this case, it is necessary to transmit the signal of the second slave station 12 by using the transmission system of the first client port. Therefore, the resource calculation unit 143 causes the resource pool 130 to execute the construction of the SW unit 131 and the modulation unit 133. As a result, as shown in FIG. 4, a transmission path avoiding the second line side E / O unit 113 and the second line side O / E unit 114 is constructed.
  • FIG. 5 is a block diagram illustrating a fifth operation example of the multiplex transmission system according to the first embodiment.
  • FIG. 5 shows an operation example when the line is switched from the active system to the standby system when the line is disconnected due to a failure in the optical fiber cable connecting the first multiplex transmission device 100 and the second multiplex transmission device 200. Is shown.
  • the line-side monitor unit 142 When a failure occurs in the transmission path connecting the first multiplex transmission device 100 and the second multiplex transmission device 200, the line-side monitor unit 142 notifies the resource calculation unit 143 of the failure information.
  • LOS Loss of signal
  • the resource calculation unit 143 causes the resource pool 130 to execute the construction of the error correction processing unit 132. As a result, signal transmission can be performed without error even when the transmission line after switching at the time of failure occurs over a long distance.
  • the operation of the multiplex transmission system according to the present disclosure is not limited to the examples shown in FIGS. 4 and 5.
  • a filter unit for lowering the transmission speed may be constructed.
  • various failures such as a failure in a transmission path and a failure in a transmission / reception unit can be dealt with by a common resource pool 130.
  • the multiplex transmission device constituting the multiplex transmission system and the resource control method of the multiplex transmission system according to the present disclosure are hardware in which preset processing is performed by the processor executing a program stored in the memory. It can also be achieved by linking hardware and software.
  • the program for realizing the apparatus and method according to the present disclosure can be recorded in an information recording medium.
  • the program for realizing the apparatus and method according to the present disclosure can also be provided through a communication network.
  • the present disclosure can be used for a multiplex transmission system in which a plurality of signals are multiplexed and transmitted between a first multiplex transmission device and a second multiplex transmission device, and resource control of the multiplex transmission system.

Abstract

Provided is a multiplex transmission system in which a redundant configuration for coping with a failure can be realized while reducing unnecessary resources. The multiplex transmission system is equipped with: a resource pool 130 which is provided in a first multiplex transmission device 100, and has resources capable of selectively constructing one or more among a plurality of functions; a monitor unit which monitors information on a failure when the failure occurs; and a control unit which controls the resource pool. When the failure occurs, the control unit causes, on the basis of the monitoring result by the monitor unit, the resource pool 130 to construct a function necessary for constructing a redundant configuration according to the content of the failure.

Description

多重伝送システムおよび多重伝送システムのリソース制御方法Resource control method for multiplex transmission system and multiplex transmission system
　本開示は、多重伝送システムおよび多重伝送システムのリソース制御方法に関するものである。 The present disclosure relates to a multiplex transmission system and a resource control method for the multiplex transmission system.
　非特許文献１には、２地点間において複数の信号を多重化して伝送する多重伝送システムが開示されている。非特許文献１には、具体的には、波長分割多重化（ＷＤＭ：Ｗａｖｅｌｅｎｇｔｈ　Ｄｉｖｉｓｉｏｎ　Ｍｕｌｔｉｐｌｅｘ）を用いて、複数の信号を多重化するものが開示されている。伝送する２つの地点のそれぞれには、波長の多重分離を行う多重伝送装置が設置される。 Non-Patent Document 1 discloses a multiplex transmission system in which a plurality of signals are multiplexed and transmitted between two points. Non-Patent Document 1 specifically discloses one that multiplexes a plurality of signals by using wavelength division multiplexing (WDM: Wavelength Division Multiplex). A multiplex transmission device that performs multiplex separation of wavelengths is installed at each of the two transmission points.
　また、非特許文献２には、アクセス網の冗長技術が記載されている。多重伝送装置をつなぐ光ファイバーケーブルの断線または多重伝送装置内の送受信部（ＴＲｘ）の故障等の各種の障害に対応するためには、非特許文献２に記載されているような冗長技術が必要となる。 In addition, Non-Patent Document 2 describes a redundant technique for an access network. In order to deal with various failures such as disconnection of the optical fiber cable connecting the multiplex transmission device or failure of the transmission / reception unit (TRx) in the multiplex transmission device, a redundant technique as described in Non-Patent Document 2 is required. Become.
　非特許文献２に記載されているような従来の冗長技術においては、障害に備えて、多重伝送システムの導入の段階から予備系のリソースを予め準備しておく必要がある。従来の冗長技術において必要となる予備系のリソースは、障害が発生していない通常時においては、無駄なリソースとなってしまう。 In the conventional redundant technology as described in Non-Patent Document 2, it is necessary to prepare spare system resources in advance from the stage of introducing the multiplex transmission system in case of a failure. The spare system resources required in the conventional redundant technology become useless resources in the normal time when no failure occurs.
　本開示は、このような課題を解決するためになされたものである。本開示の目的は、無駄なリソースを削減しつつ障害対応用の冗長構成を実現可能な多重伝送システムおよび多重伝送システムリソース制御方法を提供することにある。 This disclosure is made to solve such problems. An object of the present disclosure is to provide a multiplex transmission system and a multiplex transmission system resource control method capable of realizing a redundant configuration for troubleshooting while reducing unnecessary resources.
　本開示に係る多重伝送システムは、第１多重伝送装置と第２多重伝送装置との間で複数の信号を多重化して伝送する多重伝送システムにおいて、第１多重伝送装置に設けられ、複数の機能のうちの１つ以上の機能を選択的に構築可能なリソースを有するリソースプールと、障害の発生時に、当該障害の情報をモニタリングするモニタ部と、リソースプールの制御を行う制御部と、を備えるものである。制御部は、障害の発生時に、モニタ部によるモニタリング結果に基づいて、当該障害の内容に応じた冗長構成を構築するために必要な機能の構築を、リソースプールに実行させる。 The multiplex transmission system according to the present disclosure is provided in the first multiplex transmission device in a multiplex transmission system in which a plurality of signals are multiplexed and transmitted between the first multiplex transmission device and the second multiplex transmission device, and has a plurality of functions. It is provided with a resource pool having resources capable of selectively constructing one or more of the functions, a monitor unit for monitoring information on the failure when a failure occurs, and a control unit for controlling the resource pool. It is a thing. When a failure occurs, the control unit causes the resource pool to build functions necessary for building a redundant configuration according to the content of the failure based on the monitoring result of the monitor unit.
　本開示に係る多重伝送システムのリソース制御方法は、第１多重伝送装置と第２多重伝送装置との間で複数の信号を多重化して伝送する多重伝送システムにおいて、第１多重伝送装置に設けられ、複数の機能のうちの１つ以上の機能を選択的に構築可能なリソースを有するリソースプールを制御する方法である。このリソース制御方法は、障害の発生時に、当該障害の情報をモニタリングするモニタリングステップと、モニタリングステップの結果に基づいて、障害の内容に応じた冗長構成を構築するための機能を構築するようにリソースプールを制御する機能構築ステップと、を備える。 The resource control method of the multiplex transmission system according to the present disclosure is provided in the first multiplex transmission device in the multiplex transmission system in which a plurality of signals are multiplexed and transmitted between the first multiplex transmission device and the second multiplex transmission device. , A method of controlling a resource pool having resources capable of selectively constructing one or more of a plurality of functions. This resource control method is a resource to build a monitoring step that monitors the information of the failure when a failure occurs and a function to build a redundant configuration according to the content of the failure based on the result of the monitoring step. It has a function building step to control the pool.
　本開示に係る多重伝送システムおよび多重伝送システムのリソース制御方法によれば、無駄なリソースを削減しつつ障害対応用の冗長構成を実現することができる。 According to the multiplex transmission system and the resource control method of the multiplex transmission system according to the present disclosure, it is possible to realize a redundant configuration for troubleshooting while reducing unnecessary resources.
実施の形態１に係る多重伝送システムの全体構成の一例を模式的に示す図である。It is a figure which shows typically an example of the whole structure of the multiplex transmission system which concerns on Embodiment 1. FIG. 実施の形態１に係る多重伝送システムが備える多重伝送装置の構成を示すブロック図である。It is a block diagram which shows the structure of the multiplex transmission apparatus provided in the multiplex transmission system which concerns on Embodiment 1. FIG. 実施の形態１に係る多重伝送システムのリソース制御方法の流れを示すフロー図である。It is a flow diagram which shows the flow of the resource control method of the multiplex transmission system which concerns on Embodiment 1. FIG. 実施の形態１に係る多重伝送システムの第１の動作例を説明するブロック図である。It is a block diagram explaining the 1st operation example of the multiplex transmission system which concerns on Embodiment 1. FIG. 実施の形態１に係る多重伝送システムの第２の動作例を説明するブロック図である。It is a block diagram explaining the 2nd operation example of the multiplex transmission system which concerns on Embodiment 1. FIG.
　本開示に係る多重伝送システムおよび多重伝送システムのリソース制御方法を実施するための形態について、添付の図面を参照しながら説明する。各図において、同一又は相当する部分には同一の符号を付して、重複する説明は適宜に簡略化又は省略する。なお、本開示は以下の実施の形態に限定されることなく、本開示の趣旨を逸脱しない範囲において、実施の形態によって開示される任意の構成要素の変形または省略が可能である。 The mode for implementing the multiplex transmission system and the resource control method of the multiplex transmission system according to the present disclosure will be described with reference to the attached drawings. In each figure, the same or corresponding parts are designated by the same reference numerals, and duplicate explanations are appropriately simplified or omitted. The present disclosure is not limited to the following embodiments, and any component disclosed by the embodiments can be modified or omitted without departing from the spirit of the present disclosure.
実施の形態１．
　図１は、実施の形態１に係る多重伝送システムの全体構成の一例を模式的に示す図である。本実施の形態に係る多重伝送システムは、図１に示すように、第１多重伝送装置１００および第２多重伝送装置２００を備えている。本実施の形態の多重伝送システムは、第１多重伝送装置１００と第２多重伝送装置２００との間で複数の信号を多重化して伝送するシステムである。この開示に係る多重伝送システムは、周知である各種の信号多重化方法を使用したシステムに適用可能である。具体的な信号多重化方法としては、波長分割多重化（ＷＤＭ：Ｗａｖｅｌｅｎｇｔｈ　Ｄｉｖｉｓｉｏｎ　Ｍｕｌｔｉｐｌｅｘ）、周波数分割多重化（ＦＤＭ：Ｆｒｅｑｕｅｎｃｙ　Ｄｉｖｉｓｉｏｎ　Ｍｕｌｔｉｐｌｅｘ）、時分割多重化（ＴＤＭ：Ｔｉｍｅ　Ｄｉｖｉｓｉｏｎ　Ｍｕｌｔｉｐｌｅｘ）、符号分割多重化（ＣＤＭ：Ｃｏｄｅ　Ｄｉｖｉｓｉｏｎ　Ｍｕｌｔｉｐｌｅｘ）等を挙げることができる。ここでは、波長分割多重化（ＷＤＭ）を使用した場合の例について説明する。 Embodiment 1.
FIG. 1 is a diagram schematically showing an example of the overall configuration of the multiplex transmission system according to the first embodiment. As shown in FIG. 1, the multiplex transmission system according to the present embodiment includes a first multiplex transmission device 100 and a second multiplex transmission device 200. The multiplex transmission system of the present embodiment is a system in which a plurality of signals are multiplexed and transmitted between the first multiplex transmission device 100 and the second multiplex transmission device 200. The multiplex transmission system according to this disclosure can be applied to a system using various well-known signal multiplexing methods. Specific signal multiplexing methods include frequency division multiplexing (WDM: Waveringth Division Multiplex), frequency division multiplexing (FDM: Frequency Division Multiplex), time division multiplexing (TDM: Time Division Multiplex), and code division multiplexing (TDM). (CDM: Code Division Multiplex) and the like can be mentioned. Here, an example in the case of using wavelength division multiplexing (WDM) will be described.
　第１多重伝送装置１００と第２多重伝送装置２００とは、光ファイバーケーブルにより通信可能に接続されている。多重伝送システムによれば、２点間で伝送される複数の信号を多重化することで、複数の信号を２点間で伝送するための必要な光ファイバーケーブルの本数を削減することができる。例えば、第１多重伝送装置１００と第２多重伝送装置２００とは、１本の光ファイバーケーブルによって通信可能に接続することができる。 The first multiplex transmission device 100 and the second multiplex transmission device 200 are communicably connected by an optical fiber cable. According to the multiplex transmission system, by multiplexing a plurality of signals transmitted between two points, it is possible to reduce the number of optical fiber cables required for transmitting the plurality of signals between the two points. For example, the first multiplex transmission device 100 and the second multiplex transmission device 200 can be communicably connected by a single optical fiber cable.
　第１多重伝送装置１００および第２多重伝送装置２００の一方には、１つ以上の子局が、通信可能なように接続される。第１多重伝送装置１００および第２多重伝送装置２００の他方には、１つ以上の親局が、通信可能なように接続される。図示の構成例では、第１多重伝送装置１００に第１子局１１および第２子局１２が接続され、第２多重伝送装置２００に第１親局２１および第２親局２２が接続されている。 One or more slave stations are connected to one of the first multiplex transmission device 100 and the second multiplex transmission device 200 so as to be able to communicate with each other. One or more master stations are connected to the other of the first multiplex transmission device 100 and the second multiplex transmission device 200 so as to be able to communicate with each other. In the illustrated configuration example, the first slave station 11 and the second slave station 12 are connected to the first multiplex transmission device 100, and the first master station 21 and the second master station 22 are connected to the second multiplex transmission device 200. There is.
　本実施の形態において、多重伝送システムは、モバイルフロントホールに適用されているとする。この場合、第１親局２１および第２親局２２は、基地局のＣＵ（Ｃｅｎｔｒａｌ　Ｕｎｉｔ）および／またはＤＵ（Ｄｉｓｔｒｉｂｕｔｅｄ　Ｕｎｉｔ）にあたる。また、この場合、第１子局１１および第２子局１２はＲＵ（Ｒａｄｉｏ　Ｕｎｉｔ）にあたる。第１子局１１および第１親局２１は、第１モバイルキャリアの基地局である。第２子局１２および第２親局２２は、第２モバイルキャリアの基地局である。第１モバイルキャリアと第２モバイルキャリアとは、異なるモバイルキャリア（移動体通信事業者）である。各子局には、アンテナが接続されている。各アンテナは、個別のエリアに対して電波を出力して、受信エリアを形成する。なお、各親局は、モバイルキャリア毎に個別の装置として形成されていてもよいし、一体化された装置として形成されてもよい。同様に、各子局も、モバイルキャリア毎に個別の装置として形成されていてもよいし、一体化された装置として形成されてもよい。 In this embodiment, it is assumed that the multiplex transmission system is applied to the mobile front hall. In this case, the first master station 21 and the second master station 22 correspond to the CU (Central Unit) and / or the DU (Distributed Unit) of the base station. Further, in this case, the first slave station 11 and the second slave station 12 correspond to RU (Radio Unit). The first slave station 11 and the first master station 21 are base stations of the first mobile carrier. The second slave station 12 and the second master station 22 are base stations of the second mobile carrier. The first mobile carrier and the second mobile carrier are different mobile carriers (mobile communication carriers). An antenna is connected to each slave station. Each antenna outputs radio waves to individual areas to form a reception area. Each master station may be formed as an individual device for each mobile carrier, or may be formed as an integrated device. Similarly, each slave station may be formed as an individual device for each mobile carrier, or may be formed as an integrated device.
　図２は、実施の形態１に係る多重伝送システムが備える多重伝送装置の構成を示すブロック図である。第１多重伝送装置１００および第２多重伝送装置２００に接続される親局および子局を総称して、ここではクライアント装置と呼ぶ。第１多重伝送装置１００および第２多重伝送装置２００のそれぞれは、クライアント装置を接続可能な複数のクライアントポートが設けられている。図示の構成例では、第１多重伝送装置１００および第２多重伝送装置２００それぞれには、２つずつクライアントポートが設けられている。区別を容易にするため、第１多重伝送装置１００に設けられている２つのクライアントポートを第１クライアントポートおよび第２クライアントポートと呼ぶ。また、第２多重伝送装置２００に設けられている２つのクライアントポートを第３クライアントポートおよび第４クライアントポートと呼ぶ。なお、各図においては、「第１」を「＃１」で示し、「第２」を「＃２」で示し、「第３」を「＃３」で示し、「第４」を「＃４」で示している。 FIG. 2 is a block diagram showing a configuration of a multiplex transmission device included in the multiplex transmission system according to the first embodiment. The master station and the slave station connected to the first multiplex transmission device 100 and the second multiplex transmission device 200 are collectively referred to as a client device here. Each of the first multiplex transmission device 100 and the second multiplex transmission device 200 is provided with a plurality of client ports to which a client device can be connected. In the illustrated configuration example, each of the first multiplex transmission device 100 and the second multiplex transmission device 200 is provided with two client ports. For easy distinction, the two client ports provided in the first multiplex transmission device 100 are referred to as a first client port and a second client port. Further, the two client ports provided in the second multiplex transmission device 200 are referred to as a third client port and a fourth client port. In each figure, "first" is indicated by "# 1", "second" is indicated by "# 2", "third" is indicated by "# 3", and "fourth" is indicated by "#". 4 ”.
　第１多重伝送装置１００の第１クライアントポートには、第１クライアント側Ｏ／Ｅ部１２１および第１クライアント側Ｅ／Ｏ部１２２が設けられている。第１多重伝送装置１００の第２クライアントポートには、第２クライアント側Ｏ／Ｅ部１２３および第２クライアント側Ｅ／Ｏ部１２４が設けられている。第１多重伝送装置１００は、第１ライン側Ｅ／Ｏ部１１１、第１ライン側Ｏ／Ｅ部１１２、第２ライン側Ｅ／Ｏ部１１３および第２ライン側Ｏ／Ｅ部１１４、並びに、第１合波部１０１をさらに備えている。 The first client port of the first multiplex transmission device 100 is provided with an O / E unit 121 on the first client side and an E / O unit 122 on the first client side. The second client port of the first multiplex transmission device 100 is provided with a second client-side O / E unit 123 and a second client-side E / O unit 124. The first multiplex transmission device 100 includes a first line side E / O unit 111, a first line side O / E unit 112, a second line side E / O unit 113, a second line side O / E unit 114, and A first wave section 101 is further provided.
　第１多重伝送装置１００の第１クライアントポートに入力された光信号は、第１クライアント側Ｏ／Ｅ部１２１において電気信号に変換され、第１ライン側Ｅ／Ｏ部１１１に出力される。第１ライン側Ｅ／Ｏ部１１１は、入力された電気信号を光信号に変換して第１合波部１０１に出力する。また、第１多重伝送装置１００の第２クライアントポートに入力された光信号は、第２クライアント側Ｏ／Ｅ部１２３において電気信号に変換され、第２ライン側Ｅ／Ｏ部１１３に出力される。第２ライン側Ｅ／Ｏ部１１３は、入力された電気信号を光信号に変換して第１合波部１０１に出力する。 The optical signal input to the first client port of the first multiplex transmission device 100 is converted into an electric signal in the first client side O / E unit 121 and output to the first line side E / O unit 111. The first line side E / O unit 111 converts the input electric signal into an optical signal and outputs it to the first combine unit 101. Further, the optical signal input to the second client port of the first multiplex transmission device 100 is converted into an electric signal in the second client side O / E unit 123 and output to the second line side E / O unit 113. .. The second line side E / O unit 113 converts the input electric signal into an optical signal and outputs it to the first combine unit 101.
　第１合波部１０１は、第１ライン側Ｅ／Ｏ部１１１および第２ライン側Ｅ／Ｏ部１１３から入力された光信号を多重化する。第１合波部１０１において多重化された光信号は、第１多重伝送装置１００から第２多重伝送装置２００に送信される。 The first wave section 101 multiplexes the optical signals input from the first line side E / O section 111 and the second line side E / O section 113. The optical signal multiplexed in the first combiner section 101 is transmitted from the first multiplex transmission device 100 to the second multiplex transmission device 200.
　また、第２多重伝送装置２００から第１多重伝送装置１００に送信される多重化された光信号は、第１合波部１０１に入力される。第１合波部１０１は、第２多重伝送装置２００から入力された多重化された信号を分離し、第１ライン側Ｏ／Ｅ部１１２および第２ライン側Ｏ／Ｅ部１１４のそれぞれに出力する。 Further, the multiplexed optical signal transmitted from the second multiplex transmission device 200 to the first multiplex transmission device 100 is input to the first combine unit 101. The first combiner section 101 separates the multiplexed signal input from the second multiplex transmission device 200 and outputs it to each of the first line side O / E section 112 and the second line side O / E section 114. do.
　第１ライン側Ｏ／Ｅ部１１２は、第１合波部１０１から入力された光信号を電気信号に変換して第１クライアント側Ｅ／Ｏ部１２２に出力する。第１クライアント側Ｅ／Ｏ部１２２は、入力された電気信号を光信号に変換して第１多重伝送装置１００の第１クライアントポートに出力する。第２ライン側Ｏ／Ｅ部１１４は、第１合波部１０１から入力された光信号を電気信号に変換して第２クライアント側Ｅ／Ｏ部１２４に出力する。第２クライアント側Ｅ／Ｏ部１２４は、入力された電気信号を光信号に変換して第１多重伝送装置１００の第２クライアントポートに出力する。 The first line side O / E unit 112 converts the optical signal input from the first combine unit 101 into an electric signal and outputs it to the first client side E / O unit 122. The first client-side E / O unit 122 converts the input electric signal into an optical signal and outputs it to the first client port of the first multiplex transmission device 100. The second line side O / E unit 114 converts the optical signal input from the first combine unit 101 into an electric signal and outputs it to the second client side E / O unit 124. The second client-side E / O unit 124 converts the input electric signal into an optical signal and outputs it to the second client port of the first multiplex transmission device 100.
　このように、第１ライン側Ｅ／Ｏ部１１１、第１ライン側Ｏ／Ｅ部１１２、第１クライアント側Ｏ／Ｅ部１２１および第１クライアント側Ｅ／Ｏ部１２２は、第１多重伝送装置１００の第１クライアントポートに対応している。また、第２ライン側Ｅ／Ｏ部１１３、第２ライン側Ｏ／Ｅ部１１４、第２クライアント側Ｏ／Ｅ部１２３および第２クライアント側Ｅ／Ｏ部１２４は、第１多重伝送装置１００の第２クライアントポートに対応している。 As described above, the first line side E / O unit 111, the first line side O / E unit 112, the first client side O / E unit 121, and the first client side E / O unit 122 are the first multiplex transmission device. It corresponds to 100 first client ports. Further, the second line side E / O unit 113, the second line side O / E unit 114, the second client side O / E unit 123, and the second client side E / O unit 124 are the first multiplex transmission device 100. It corresponds to the second client port.
　第２多重伝送装置２００は、第１多重伝送装置１００と同様に構成される。第２多重伝送装置２００の内部構成については図示を省略する。上述したように、第２多重伝送装置２００には、第３クライアントポートおよび第４クライアントポートが設けられている。第２多重伝送装置２００は、各クライアントポートに対応するクライアント側のＯ／Ｅ部およびＥ／Ｏ部を備える。第２多重伝送装置２００は、各クライアントポートに対応するライン側のＯ／Ｅ部およびＥ／Ｏ部を備える。また、第２多重伝送装置２００は、第１合波部１０１と同様に機能する第２合波部を備える。 The second multiplex transmission device 200 is configured in the same manner as the first multiplex transmission device 100. The internal configuration of the second multiplex transmission device 200 is not shown. As described above, the second multiplex transmission device 200 is provided with a third client port and a fourth client port. The second multiplex transmission device 200 includes a client-side O / E unit and an E / O unit corresponding to each client port. The second multiplex transmission device 200 includes an O / E unit and an E / O unit on the line side corresponding to each client port. Further, the second multiplex transmission device 200 includes a second combiner that functions in the same manner as the first combiner 101.
　各多重伝送装置が備えるライン側のＯ／Ｅ部およびＥ／Ｏ部は、固定の波長で発光する光モジュールで構成される。第１多重伝送装置１００が備えるライン側のＯ／Ｅ部およびＥ／Ｏ部は、第２多重伝送装置２００が備えるライン側のＯ／Ｅ部およびＥ／Ｏ部のうち、自身と同じ波長で発光する光モジュールとの間でのみ通信を行うことができる。 The line-side O / E section and E / O section of each multiplex transmission device are composed of an optical module that emits light at a fixed wavelength. The line-side O / E section and E / O section included in the first multiplex transmission device 100 have the same wavelength as the line-side O / E section and E / O section of the second multiplex transmission device 200. Communication can only be performed with an optical module that emits light.
　なお、各子局と第１多重伝送装置１００とは、伝送路の冗長構成を構築するため、図示しないカプラを介して接続されていてもよい。同様に、各親局と第２多重伝送装置２００とは、伝送路の冗長構成を構築するためのカプラを介して接続されていてもよい。また、カプラの代わりに、各多重伝送装置の内部に設けられた伝送路を切り替え可能なスイッチを用いて、基地局と各多重伝送装置との伝送路の冗長構成を構築してもよい。 Note that each slave station and the first multiplex transmission device 100 may be connected via a coupler (not shown) in order to construct a redundant configuration of a transmission line. Similarly, each master station and the second multiplex transmission device 200 may be connected via a coupler for constructing a redundant configuration of a transmission line. Further, instead of the coupler, a switch capable of switching the transmission line provided inside each multiplex transmission device may be used to construct a redundant configuration of the transmission line between the base station and each multiplex transmission device.
　図示の構成例では、第１多重伝送装置１００は、多重伝送装置間の伝送路の冗長構成を構築するため、第１線路切替部１０２を備えている。図示を省略するが、第２多重伝送装置２００は、第１線路切替部１０２と同様に機能する第２線路切替部を備える。線路切替部は、多重伝送装置間の伝送路の冗長構成を構築するためのものである。線路切替部同士は、複数の経路（光ファイバーケーブル）によって接続される。図示の構成例において、線路切替部同士は、２つの経路によって繋がれている。線路切替部には、合波部からの信号が入力される。線路切替部は、線路切替部同士を繋ぐ複数の経路のうちの任意の経路を選択し、選択した線路に対して合波部からの信号を出力する。なお、線路切替部は、多重伝送装置の外部に設けられていてもよい。このように、本実施の形態において、第１多重伝送装置１００と第２多重伝送装置２００とは、切り替え可能な複数の伝送経路によって接続されている。 In the illustrated configuration example, the first multiplex transmission device 100 includes a first line switching unit 102 in order to construct a redundant configuration of transmission lines between the multiplex transmission devices. Although not shown, the second multiplex transmission device 200 includes a second line switching unit that functions in the same manner as the first line switching unit 102. The line switching unit is for constructing a redundant configuration of transmission lines between multiplex transmission devices. The line switching portions are connected by a plurality of paths (optical fiber cables). In the illustrated configuration example, the line switching portions are connected by two paths. A signal from the combine section is input to the line switching section. The line switching unit selects an arbitrary route from a plurality of routes connecting the line switching units, and outputs a signal from the combine unit to the selected line. The line switching unit may be provided outside the multiplex transmission device. As described above, in the present embodiment, the first multiplex transmission device 100 and the second multiplex transmission device 200 are connected by a plurality of switchable transmission paths.
　また、図２に示すように、本実施の形態において、第１多重伝送装置１００は、リソースプール１３０を備える。リソースプール１３０は、複数の機能のうちの１つ以上の機能を選択的に構築可能なリソースを有する。リソースプール１３０は、例えば、書き換え可能なＦＰＧＡから構成される。リソースプール１３０には、各種の電気的機能を、柔軟に追加および削除することができる。リソースプール１３０は、必要に応じて、部分的もしくはその全部を書き換えて、必要な機能を構築する。リソースプール１３０は、障害発生時に、障害対応用の冗長構成を実現するための機能を構築する。 Further, as shown in FIG. 2, in the present embodiment, the first multiplex transmission device 100 includes a resource pool 130. The resource pool 130 has resources capable of selectively constructing one or more functions among a plurality of functions. The resource pool 130 is composed of, for example, a rewritable FPGA. Various electrical functions can be flexibly added to and removed from the resource pool 130. The resource pool 130 partially or completely rewrites as necessary to build the necessary functions. The resource pool 130 constructs a function for realizing a redundant configuration for dealing with a failure when a failure occurs.
　本開示では、リソースプール１３０を用いて冗長構成を構築する。これにより、従来に比べて有効にリソースを活用することが可能となる。本開示によれば、無駄なリソースを削減しつつ障害対応用の冗長構成を実現することができる。 In this disclosure, a redundant configuration is constructed using the resource pool 130. This makes it possible to utilize resources more effectively than in the past. According to the present disclosure, it is possible to realize a redundant configuration for troubleshooting while reducing unnecessary resources.
　なお、リソースプール１３０は、第２多重伝送装置２００にも備えられていてもよい。本開示において、リソースプール１３０は、第１多重伝送装置１００および第２多重伝送装置２００の少なくとも一方に備えられていればよい。 The resource pool 130 may also be provided in the second multiplex transmission device 200. In the present disclosure, the resource pool 130 may be provided in at least one of the first multiplex transmission device 100 and the second multiplex transmission device 200.
　リソースプール１３０のリソースに構築可能な機能部は、例えば、ＳＷ部１３１、誤り訂正処理部１３２、変調部１３３およびフィルタ部１３４等である。ＳＷ部１３１は、スイッチング機能を有するものである。ＳＷ部１３１は、例えば、第１多重伝送装置１００内の各Ｏ／Ｅ部および各Ｅ／Ｏ部等の送受信部に障害が生じた場合において、冗長経路を構築する。 The functional units that can be constructed in the resources of the resource pool 130 are, for example, the SW unit 131, the error correction processing unit 132, the modulation unit 133, the filter unit 134, and the like. The SW unit 131 has a switching function. The SW unit 131 constructs a redundant path, for example, when a failure occurs in each O / E unit, each E / O unit, or other transmission / reception unit in the first multiplex transmission device 100.
　誤り訂正処理部１３２は、伝送路で発生する信号劣化によるビット誤り率を訂正する機能を有するものである。誤り訂正処理部１３２は、送信側でデータに付加された誤り訂正符号を基に、受信側で誤りを検出して訂正する。誤り訂正符号には、例えば、リードソロモン符号またはＬＤＰＣ符号等の任意の符号が配当する。誤り訂正処理部１３２は、例えば、線路故障の際、切替先の経路が長距離となる場合に、リソースプール１３０のリソースに構築される。 The error correction processing unit 132 has a function of correcting the bit error rate due to signal deterioration occurring in the transmission line. The error correction processing unit 132 detects and corrects an error on the receiving side based on the error correction code added to the data on the transmitting side. For the error correction code, for example, an arbitrary code such as a Reed-Solomon code or an LDPC code is paid out. The error correction processing unit 132 is constructed in the resource of the resource pool 130, for example, when the switching destination route becomes a long distance in the event of a line failure.
　変調部１３３は、クライアントポートからの信号を多値化する機能を有するものである。変調部１３３は、例えば、ＰＡＭ４信号を生成する。変調部１３３によれば、ボーレートを維持しつつ、ビットレートを高速化することができる。変調部１３３によれば、例えば、Ｏ／Ｅ部およびＥ／Ｏ部のコストを低減することができる。 The modulation unit 133 has a function of multiplying the signal from the client port. The modulation unit 133 generates, for example, a PAM4 signal. According to the modulation unit 133, the bit rate can be increased while maintaining the baud rate. According to the modulation unit 133, for example, the cost of the O / E unit and the E / O unit can be reduced.
　フィルタ部１３４は、伝送速度を下げるためのものであり、主信号の一部をフィルタリングして廃棄する機能を有するものである。 The filter unit 134 is for reducing the transmission speed, and has a function of filtering and discarding a part of the main signal.
　また、本実施の形態に係る多重伝送システムは、管理制御部１４０を備える。管理制御部１４０は、例えば、リソースプール側モニタ部１４１、ライン側モニタ部１４２およびリソース計算部１４３を備える。なお、図示の構成例において管理制御部１４０は第１多重伝送装置１００の外に設けられているが、管理制御部１４０の少なくとも一部の機能が第１多重伝送装置１００内に備えられていてもよい。また、管理制御部１４０の少なくとも一部の機能は、第２多重伝送装置２００内に備えられていてもよい。 Further, the multiplex transmission system according to the present embodiment includes a management control unit 140. The management control unit 140 includes, for example, a resource pool side monitor unit 141, a line side monitor unit 142, and a resource calculation unit 143. Although the management control unit 140 is provided outside the first multiplex transmission device 100 in the illustrated configuration example, at least a part of the functions of the management control unit 140 is provided in the first multiplex transmission device 100. May be good. Further, at least a part of the functions of the management control unit 140 may be provided in the second multiplex transmission device 200.
　リソースプール側モニタ部１４１は、リソースプール１３０の現在の状態をモニタリングする。リソースプール側モニタ部１４１によるモニタリング情報は、リソース計算部１４３へ送られる。ライン側モニタ部１４２は、第１ライン側Ｅ／Ｏ部１１１、第１ライン側Ｏ／Ｅ部１１２、第２ライン側Ｅ／Ｏ部１１３および第２ライン側Ｏ／Ｅ部１１４の状態をモニタリングする。ライン側モニタ部１４２によるモニタリング情報は、リソース計算部１４３へ送られる。例えば、第１ライン側Ｅ／Ｏ部１１１、第１ライン側Ｏ／Ｅ部１１２、第２ライン側Ｅ／Ｏ部１１３および第２ライン側Ｏ／Ｅ部１１４の何れかが故障した場合、ライン側モニタ部１４２はリソース計算部１４３に対して故障通知を行う。リソース計算部１４３は、リソースプール１３０内のリソースに各機能部を構築するための計算処理を行う。リソース計算部１４３は、リソースプール側モニタ部１４１およびライン側モニタ部１４２から送られるモニタリング情報に基づいて、計算処理を行う。そして、リソース計算部１４３は、計算処理結果に基づいて、必要な機能部を構築するようにリソースプール１３０に指示を出す。 The resource pool side monitor unit 141 monitors the current state of the resource pool 130. The monitoring information by the resource pool side monitoring unit 141 is sent to the resource calculation unit 143. The line side monitor unit 142 monitors the states of the first line side E / O unit 111, the first line side O / E unit 112, the second line side E / O unit 113, and the second line side O / E unit 114. do. The monitoring information by the line side monitor unit 142 is sent to the resource calculation unit 143. For example, if any of the first line side E / O section 111, the first line side O / E section 112, the second line side E / O section 113, and the second line side O / E section 114 fails, the line The side monitor unit 142 notifies the resource calculation unit 143 of the failure. The resource calculation unit 143 performs a calculation process for constructing each functional unit in the resource in the resource pool 130. The resource calculation unit 143 performs calculation processing based on the monitoring information sent from the resource pool side monitor unit 141 and the line side monitor unit 142. Then, the resource calculation unit 143 issues an instruction to the resource pool 130 to construct a necessary functional unit based on the calculation processing result.
　管理制御部１４０は、ハードウェアとして、プロセッサおよびメモリを備えたコンピュータにより構成してもよい。プロセッサは、ＣＰＵ（Ｃｅｎｔｒａｌ　Ｐｒｏｃｅｓｓｉｎｇ　Ｕｎｉｔ）、中央処理装置、処理装置、演算装置、マイクロプロセッサ、マイクロコンピュータあるいはＤＳＰともいう。メモリには、例えば、ＲＡＭ、ＲＯＭ、フラッシュメモリー、ＥＰＲＯＭおよびＥＥＰＲＯＭ等の不揮発性または揮発性の半導体メモリ、又は、磁気ディスク、フレキシブルディスク、光ディスク、コンパクトディスク、ミニディスクおよびＤＶＤ等が該当する。 The management control unit 140 may be configured by a computer equipped with a processor and a memory as hardware. The processor is also referred to as a CPU (Central Processing Unit), a central processing unit, a processing unit, an arithmetic unit, a microprocessor, a microcomputer, or a DSP. Examples of the memory include non-volatile or volatile semiconductor memories such as RAM, ROM, flash memory, EPROM and EEPROM, or magnetic disks, flexible disks, optical disks, compact disks, mini disks and DVDs.
　管理制御部１４０のメモリには、ソフトウェアとしてのプログラムが記憶される。管理制御部１４０は、メモリに記憶されたプログラムをプロセッサが実行することによって予め設定された処理を実施し、ハードウェアとソフトウェアとが協働した結果として、各機能を実現する。 The program as software is stored in the memory of the management control unit 140. The management control unit 140 executes preset processing by executing a program stored in the memory by the processor, and realizes each function as a result of the cooperation between the hardware and the software.
　本実施の形態におけるライン側モニタ部１４２は、障害の発生時において当該障害の情報をモニタリングするモニタ部として機能する。また、本実施の形態におけるリソース計算部１４３は、モニタ部によるモニタリング結果に基づいて、障害の内容に応じた冗長構成を構築するために必要な機能の構築をリソースプール１３０に実行させる制御部として機能する。 The line-side monitor unit 142 in the present embodiment functions as a monitor unit for monitoring information on the failure when a failure occurs. Further, the resource calculation unit 143 in the present embodiment serves as a control unit for causing the resource pool 130 to construct the functions necessary for constructing the redundant configuration according to the content of the failure based on the monitoring result by the monitor unit. Function.
　次に、以上のように構成された多重伝送システムの動作の流れについて説明する。図３は、実施の形態１に係る多重伝送システムのリソース制御方法の流れを示すフロー図である。図３は、障害の発生時における動作を説明するものである。障害が発生すると、まず、ステップＳ１１において、当該障害の情報をモニタリングする。このステップＳ１１の処理を、本開示では、モニタリングステップとも称することとする。 Next, the operation flow of the multiplex transmission system configured as described above will be explained. FIG. 3 is a flow chart showing the flow of the resource control method of the multiplex transmission system according to the first embodiment. FIG. 3 illustrates the operation when a failure occurs. When a failure occurs, first, in step S11, information on the failure is monitored. The process of step S11 is also referred to as a monitoring step in the present disclosure.
　続くステップＳ１２において、モニタリングステップの結果に基づいて、障害の内容に応じた冗長構成を構築するための機能の構築を、前記リソースプールに実行させる。このステップＳ１２の処理を、本開示では、機能構築ステップとも称することとする。モニタリングステップおよび機能構築ステップは、管理制御部１４０およびリソースプール１３０によって実施される。 In the following step S12, based on the result of the monitoring step, the resource pool is made to construct a function for constructing a redundant configuration according to the content of the failure. In the present disclosure, the process of step S12 will also be referred to as a function construction step. The monitoring step and the function building step are carried out by the management control unit 140 and the resource pool 130.
　図３に示すようなリソース制御方法および当該リソース制御方法を実行可能に構成された多重伝送システムによれば、無駄なリソースを削減しつつ、各種の障害に対応することができる。 According to the resource control method as shown in FIG. 3 and the multiplex transmission system configured to be able to execute the resource control method, it is possible to deal with various failures while reducing wasteful resources.
　例えば、第１多重伝送装置１００内の送受信部に障害が発生した場合、ライン側モニタ部１４２は、当該障害の情報をリソース計算部１４３へ通知する。第１多重伝送装置１００内の送受信部に障害が発生した場合、リソース計算部１４３は、当該障害箇所を含む伝送経路を避けた新たな伝送経路を構築するための機能構築を、前記リソースプール１３０に実行させる。 For example, when a failure occurs in the transmission / reception unit in the first multiplex transmission device 100, the line side monitor unit 142 notifies the resource calculation unit 143 of the information of the failure. When a failure occurs in the transmission / reception unit in the first multiplex transmission device 100, the resource calculation unit 143 installs a function for constructing a new transmission path avoiding the transmission path including the failure location in the resource pool 130. To execute.
　図４は、実施の形態１に係る多重伝送システムの第１の動作例を説明するブロック図である。図４は、第２ライン側Ｅ／Ｏ部１１３もしくは第２ライン側Ｏ／Ｅ部１１４が故障した場合の動作例を示している。第２ライン側Ｅ／Ｏ部１１３もしくは第２ライン側Ｏ／Ｅ部１１４が故障すると、第２子局１２の信号伝送ができなくなってしまう。この場合には、第１クライアントポートの伝送系統を用いて、第２子局１２の信号伝送を行う必要がある。そこで、リソース計算部１４３は、ＳＷ部１３１および変調部１３３の構築を、リソースプール１３０に実行させる。これにより、図４に示すように、第２ライン側Ｅ／Ｏ部１１３および第２ライン側Ｏ／Ｅ部１１４を避けた伝送経路が構築される。 FIG. 4 is a block diagram illustrating a first operation example of the multiplex transmission system according to the first embodiment. FIG. 4 shows an operation example when the second line side E / O unit 113 or the second line side O / E unit 114 fails. If the second line side E / O unit 113 or the second line side O / E unit 114 fails, the signal transmission of the second slave station 12 cannot be performed. In this case, it is necessary to transmit the signal of the second slave station 12 by using the transmission system of the first client port. Therefore, the resource calculation unit 143 causes the resource pool 130 to execute the construction of the SW unit 131 and the modulation unit 133. As a result, as shown in FIG. 4, a transmission path avoiding the second line side E / O unit 113 and the second line side O / E unit 114 is constructed.
　図５は、実施の形態１に係る多重伝送システムの第５の動作例を説明するブロック図である。図５は、第１多重伝送装置１００と第２多重伝送装置２００とを繋ぐ光ファイバーケーブルに障害が発生して回線が切断された場合に、回線を現用系から予備系に切り替えた場合の動作例を示している。第１多重伝送装置１００と第２多重伝送装置２００とを繋ぐ伝送経路に障害が生じた場合、この障害の情報の通知が、ライン側モニタ部１４２からリソース計算部１４３へ実施される。なお、通知方法としては、各ライン側のＯ／Ｅ部のＬＯＳ（Ｌｏｓｓ　ｏｆ　ｓｉｇｎａｌ）を利用してもよい。 FIG. 5 is a block diagram illustrating a fifth operation example of the multiplex transmission system according to the first embodiment. FIG. 5 shows an operation example when the line is switched from the active system to the standby system when the line is disconnected due to a failure in the optical fiber cable connecting the first multiplex transmission device 100 and the second multiplex transmission device 200. Is shown. When a failure occurs in the transmission path connecting the first multiplex transmission device 100 and the second multiplex transmission device 200, the line-side monitor unit 142 notifies the resource calculation unit 143 of the failure information. As the notification method, LOS (Loss of signal) of the O / E unit on each line side may be used.
　例えば、予備系の伝送経路が切り替え前の現用系よりも長い場合、第１多重伝送装置１００と第２多重伝送装置２００との間での信号劣化によるビット誤り率が高くなってしまう。そこで、リソース計算部１４３は、誤り訂正処理部１３２の構築を、リソースプール１３０に実行させる。これにより、障害発生時における切り替え後の伝送路が長距離となる場合においても、信号伝送を誤りなく行うことができる。 For example, if the transmission path of the backup system is longer than that of the active system before switching, the bit error rate due to signal deterioration between the first multiplex transmission device 100 and the second multiplex transmission device 200 becomes high. Therefore, the resource calculation unit 143 causes the resource pool 130 to execute the construction of the error correction processing unit 132. As a result, signal transmission can be performed without error even when the transmission line after switching at the time of failure occurs over a long distance.
　なお、本開示に係る多重伝送システムの動作は、図４および図５に示す例に限定されるものではない。例えば、障害の内容に依っては、伝送速度の下げるためのフィルタ部の構築を行ってもよい。本開示によれば、伝送経路における障害および送受信部における障害等の各種の障害に対して、共通のリソースプール１３０で対応をすることができる。本開示によれば、無駄なリソースを削減しつつ障害対応用の冗長構成を実現可能な多重伝送システムおよび多重伝送システムリソース制御方法を提供することができる。 The operation of the multiplex transmission system according to the present disclosure is not limited to the examples shown in FIGS. 4 and 5. For example, depending on the content of the failure, a filter unit for lowering the transmission speed may be constructed. According to the present disclosure, various failures such as a failure in a transmission path and a failure in a transmission / reception unit can be dealt with by a common resource pool 130. According to the present disclosure, it is possible to provide a multiplex transmission system and a multiplex transmission system resource control method capable of realizing a redundant configuration for troubleshooting while reducing unnecessary resources.
　また、本開示に係る多重伝送システムを構成する多重伝送装置、および、多重伝送システムのリソース制御方法は、メモリに記憶されたプログラムをプロセッサが実行することによって予め設定された処理を実施し、ハードウェアとソフトウェアとを協働させることでも実現できる。そして、本開示に係る装置および方法を実現するためのプログラムは情報記録媒体に記録しておくことが可能である。また、本開示に係る装置および方法を実現するためのプログラムは、通信ネットワークを通して提供することも可能である。 Further, the multiplex transmission device constituting the multiplex transmission system and the resource control method of the multiplex transmission system according to the present disclosure are hardware in which preset processing is performed by the processor executing a program stored in the memory. It can also be achieved by linking hardware and software. The program for realizing the apparatus and method according to the present disclosure can be recorded in an information recording medium. In addition, the program for realizing the apparatus and method according to the present disclosure can also be provided through a communication network.
　本開示は、第１多重伝送装置と第２多重伝送装置との間で複数の信号を多重化して伝送する多重伝送システムおよび当該多重伝送システムのリソース制御に利用できる。 The present disclosure can be used for a multiplex transmission system in which a plurality of signals are multiplexed and transmitted between a first multiplex transmission device and a second multiplex transmission device, and resource control of the multiplex transmission system.
　１１　　第１子局
　１２　　第２子局
　２１　　第１親局
　２２　　第２親局
１００　　第１多重伝送装置
１０１　　第１合波部
１０２　　第１線路切替部
１１１　　第１ライン側Ｅ／Ｏ部
１１２　　第１ライン側Ｏ／Ｅ部
１１３　　第２ライン側Ｅ／Ｏ部
１１４　　第２ライン側Ｏ／Ｅ部
１２１　　第１クライアント側Ｏ／Ｅ部
１２２　　第１クライアント側Ｅ／Ｏ部
１２３　　第２クライアント側Ｏ／Ｅ部
１２４　　第２クライアント側Ｅ／Ｏ部
１３０　　リソースプール
１３１　　ＳＷ部
１３２　　誤り訂正処理部
１３３　　変調部
１３４　　フィルタ部
１４０　　管理制御部
１４１　　リソースプール側モニタ部
１４２　　ライン側モニタ部
１４３　　リソース計算部
２００　　第２多重伝送装置 11 1st slave station 12 2nd slave station 21 1st master station 22 2nd master station 100 1st multiplex transmission device 101 1st combiner 102 1st line switching section 111 1st line side E / O section 112 1st Line side O / E section 113 2nd line side E / O section 114 2nd line side O / E section 121 1st client side O / E section 122 1st client side E / O section 123 2nd client side O / E Unit 124 2nd client side E / O unit 130 Resource pool 131 SW unit 132 Error correction processing unit 133 Modulation unit 134 Filter unit 140 Management control unit 141 Resource pool side monitor unit 142 Line side monitor unit 143 Resource calculation unit 200 2nd multiplexing Transmission device

Claims (4)

  1. 　第１多重伝送装置と第２多重伝送装置との間で複数の信号を多重化して伝送する多重伝送システムにおいて、
    　前記第１多重伝送装置に設けられ、複数の機能のうちの１つ以上の機能を選択的に構築可能なリソースを有するリソースプールと、
    　障害の発生時に、当該障害の情報をモニタリングするモニタ部と、
    　前記リソースプールの制御を行う制御部と、
    　を備え、
    　前記制御部は、障害の発生時に、前記モニタ部によるモニタリング結果に基づいて、当該障害の内容に応じた冗長構成を構築するために必要な機能の構築を、前記リソースプールに実行させる多重伝送システム。     In a multiplex transmission system in which a plurality of signals are multiplexed and transmitted between a first multiplex transmission device and a second multiplex transmission device.
    A resource pool provided in the first multiplex transmission device and having resources capable of selectively constructing one or more of a plurality of functions, and a resource pool.
    When a failure occurs, a monitor unit that monitors the information of the failure and
    A control unit that controls the resource pool and
    Equipped with
    When a failure occurs, the control unit causes the resource pool to execute the construction of functions necessary for constructing a redundant configuration according to the content of the failure based on the monitoring result by the monitor unit. ..
  2. 　前記第１多重伝送装置内の送受信部に障害が発生した場合、前記制御部は、当該障害箇所を含む伝送経路を避けた新たな伝送経路を構築するための機能構築を、前記リソースプールに実行させる請求項１に記載の多重伝送システム。 When a failure occurs in the transmission / reception unit in the first multiplex transmission device, the control unit executes function construction in the resource pool to construct a new transmission path avoiding the transmission path including the failure location. The multiplex transmission system according to claim 1.
  3. 　前記第１多重伝送装置と前記第２多重伝送装置とは、切り替え可能な複数の伝送経路によって接続され、
    　前記伝送経路に障害が発生して前記伝送経路の切り替えが行われた場合、前記制御部は、誤り訂正処理部の構築を前記リソースプールに実行させる請求項１または請求項２に記載の多重伝送システム。     The first multiplex transmission device and the second multiplex transmission device are connected by a plurality of switchable transmission paths.
    The multiplex transmission according to claim 1 or 2, wherein when a failure occurs in the transmission path and the transmission path is switched, the control unit causes the resource pool to construct an error correction processing unit. system.
  4. 　第１多重伝送装置と第２多重伝送装置との間で複数の信号を多重化して伝送する多重伝送システムにおいて、前記第１多重伝送装置に設けられ、複数の機能のうちの１つ以上の機能を選択的に構築可能なリソースを有するリソースプールを制御する方法であって、
    　障害の発生時に、当該障害の情報をモニタリングするモニタリングステップと、
    　前記モニタリングステップの結果に基づいて、障害の内容に応じた冗長構成を構築するための機能の構築を、前記リソースプールに実行させる機能構築ステップと、
    　を備える多重伝送システムのリソース制御方法。     In a multiplex transmission system in which a plurality of signals are multiplexed and transmitted between a first multiplex transmission device and a second multiplex transmission device, the first multiplex transmission device is provided with one or more functions among the plurality of functions. Is a method of controlling a resource pool that has resources that can be selectively constructed.
    When a failure occurs, a monitoring step to monitor the information of the failure and
    Based on the result of the monitoring step, the function construction step for causing the resource pool to execute the construction of the function for constructing the redundant configuration according to the content of the failure, and the function construction step.
    A resource control method for a multiplex transmission system.
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